open_valve()

'''set_pol_cplus(offset = None)
set_file('Fe_hyst_plus')
hyst_cont(field_x, 6.8, -6.8, 2.0, [707.0, 704.5])


set_pol_cminus(offset = None)
set_file('Fe_hyst_minus')
hyst_cont(field_x, -6.8, 6.8, 2.0, [707.0, 704.5])'''

set_pol_cminus(offset = None)
set_file('Fe_hyst_minus')
hyst_cont(field_x, 6.8, -6.8, 2.0, [707.0, 704.5])


set_pol_cplus(offset = None)
set_file('Fe_hyst_plus')
hyst_cont(field_x, -6.8, 6.8, 2.0, [707.0, 704.5])

close_valve()